Abstract: Synthetic manganese oxide octahedral molecular sieves, e.g., OMS-1 and OMS-2, are employed as acid-base catalysts in a variety of acid-base organic conversion reactions.

Abstract: A TiCl.sub.3 catalyst system is disclosed employing the electron donor, dicyclopentyldimethoxysilane ("DCPMS"). Additionally disclosed is a process for polymerizing olefins in the presence of a catalyst system employing a titanium trichloride catalyst, an alkylaluminum cocatalyst, and dicyclopentyldimethoxysilane is provided. The polymerization process comprises providing a prepolymerized titanium trichloride catalyst, and polymerizing an .alpha.-olefin in the presence of the prepolymerized catalyst, a trialkylaluminum co-catalyst and dicyclopentyldimethoxysilane. The catalyst system of the invention provides increased catalyst activity for a TiCl.sub.3 catalyst and a very broad polymer molecular weight distribution.

Abstract: The subject of the invention is dewetting or degreasing compositions based on halogenated aliphatic solvents containing in solution at least one mono- or dialkyl phosphate of a fluorinated amine, at least one quaternary ammonium mono- or dialkylphosphate and optionally a quaternary ammonium chloride.

Abstract: The method of converting n-butylenes to isobutylene by a skeletal isomrization reaction wherein said reaction is carried out at a temperature of between 300.degree. C. and 650.degree. C., under a pressure of between 0.1 and 100 atmospheres and a space velocity of said n-butylenes of between 0.1 and 40 WHSV using a cagalyst comprising a zeolite binder selected frm the group consisting of alumina, silica, silica-alumina, clay and a combination thereof, said catalyst having a pore size of at least about 4.5 angstroms and the pore size structure is characteried by intersecting 10-member ring and 8-member ring channels.

Abstract: A catalyst composition comprising palladium, silver and a support material (preferably alumina) is contacted at a relatively low temperature (of up to about 60.degree. C.) with a liquid composition comprising an effective reducing agent (preferably an alkali metal borohydride, hydrazinc, formaldehyde, formic acid, ascorbic acid, dextrose, aluminum powder). Preferably, at least one alkali metal compound (more preferably KOH, RbOH, CsOH, KF) is also present in the liquid composition. An improved process for selectively hydrogenating acetylene (to ethylene) employs this wet-reduced catalyst composition.

Abstract: A catalyst, which is active in the oligomerization of olefins is an X-ray-amorphous silica-alumina-nickel oxide gel having an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 30/1 to 500/1, and NiO/SiO.sub.2 molar ratio of from 0.001/1 to 0.01/1, a superficial area of from 500 m.sup.2 /g to 1.000 m.sup.2 /g, and a porosity of from 0.3 ml/g to 0.6 ml/g, the means pore diameter being 1 nm (10 Angstrom), and devoid of pores having a diameter over 3 nm (30 Angstrom). The catalyst selectively dimerizes isobutene into alpha- and beta-isobutene and oligomerizes propylene into its relative dimers and trimers. A process is described for preparing the silica-alumina-nickel oxide gel.

Abstract: A novel family of substantially amorphous aluminosilicate catalysts and a process for the manufacture thereof are described. In the process, a source of silica, a source of alumina and a source of an alkali metal are mixed in an aqueous medium and then subjected to hydrothermal treatment at a temperature of from 20.degree. C. to 200.degree. C. for a period of from 1 hour to 250 hours, the reaction conditions and duration being selected so as to produce a solid which is substantially amorphous. The invention also extends to the use of the calalyst in acid catalyzed reactions such as the skeletal isomerization of normal olefins, in particular normal butene, and to the use of the catalyst as a support in metal catalyzed reactions.

Abstract: This invention relates to a conventional supported heterogeneous Ziegler-Natta catalyst for the polymerization of olefins. It has been found that adding a lithium compound to a transition metal catalyst component and then adding an organoaluminum co-catalyst and an organosilicon electron donor produces a catalyst which yields polymer with increased molecular weight. The lithium compound is of the general formula LiCp wherein Cp is a cyclopentadienyl or substituted cyclopentadienyl and is preferably lithium cyclopentadienide or lithium indene. Preferably, the molar ratio of lithium compound/transition metal is at least 0.2.

Abstract: The invention concerns a catalytic composition and a process for the dimerization, codimerization or oligomerization of olefins, said composition comprising a mixture of at least one bivalent nickel complex which contains two tertiary phosphine molecules, at least one nickel compound or complex compound which contains neither water nor phosphine, and at least one alkylaluminum halide. The mixture is particularly for use in ionic type non aqueous liquid compositions, such as those formed by quaternary ammonium halides and/or quaternary phosphonium halides with aluminum halides and/or alkylaluminum halides.

Abstract: Polyurethane foam-supported double metal cyanide (DMC) catalysts are disclosed as useful catalysts for epoxide polymerization. The foam-supported catalysts are easy to prepare, and are more active and show reduced induction periods compared with conventional powdered DMC catalysts. The catalysts of the invention can be recovered from the epoxide polymer products and can be reused to catalyze additional epoxide polymerizations.

Abstract: Process for the dehydrogenation of a hydrocarbon feed stream comprising steps of contacting the feed stream with a dehydrogenation catalyst in at least one dehydrogenation zone and reacting the feed stream to a hydrogen containing effluent stream;admixing to the effluent stream an oxygen containing atmosphere in at least one mixing zone;removing hydrogen from the effluent stream by reaction with oxygen in the oxygen containing atmosphere by contact with a hydrogen oxidation catalyst in at least one hydrogen removing zone,the improvement of which comprises employing massive forms of noble metals or alloys thereof as catalyst in the hydrogen removal zone.

Abstract: A method for oligomerizing an .alpha.-olefin in the presence of a catalyst comprising a specific chromium compound including chromium atom and pyrrolyl group and an alkylaluminum compound, wherein the .alpha.-olefin is contacted to the chromium compound and the alkylaluminum compound without preliminarily contacting the chromium compound to either the .alpha.-olefin or the alkylaluminum compound.

Abstract: This invention covers a process for converting a feed comprising at least one lower aliphatic alcohol having from 1 to 3 carbon atoms or a corresponding ether of such an alcohol to hydrocarbon products comprising linear olefins. The process comprises contacting the feed in a reaction zone with a catalyst comprising material having a large crystal ferrierite aluminosilicate structure. An effluent is withdrawn from the reaction zone, which comprises linear olefins. Linear olefins may then be separated from the effluent. The aliphatic alcohol having from 1 to 3 carbons is generally methanol and the preferred ether is dimethyl ether. ZSM-35 is the preferred large crystal ferrierite structure of this invention.

Abstract: The present invention is directed to novel catalyst compositions, their preparation, and their use in a selective paraffin isomerization process. The solid acid catalyst compositions comprise a zirconium hydroxide support, a Group VIII metal, and a heteropolyacid selected from the group consisting of the exchanged aluminum salt of 12-tungstophosphoric acid, the exchanged salt of 12-tungstosilicic acid, and mixtures thereof. The use of said catalysts in an isomerization process comprises contacting said catalysts with a feed comprising C.sub.n or C.sub.n + paraffins, wherein n=4.

Abstract: A catalyst useful in the disproportionation of alkanes is provided comprising an acid component having the formula HB(OSO.sub.2 CF.sub.3).sub.4 and a support. A method for the disproportionation of C.sub.4 -C.sub.16 alkanes employing the catalyst is also provided.

Abstract: An improved method for inhibiting the polymerization of vinyl aromatic monomer with a hydroxylamine compound is disclosed. The improvement provides for adding a catalytic amount of a phenylenediamine compound to the vinyl aromatic system while replacing any phenylenediamine compound lost as a result of physical removal from the system via the waste stream.

Abstract: A process is disclosed for the continuous highly selective skeletal isomerization of linear olefin-containing organic feeds to iso-olefins over constrained intermediate pore zeolites, e.g., ZSM-35, using multiple parallel reactors.

Abstract: Aliphatic feeds are converted to olefins and/or aromatics in a multi pressure reactor system. A high pressure first stage reactor generates much or all of the hydrogen needed to reduce catalyst coking in lower pressure downstream reactors. High pressure operation protects catalyst stability in the first reactor, while produced hydrogen helps protect downstream catalyst. Low pressure downstream operation improves yields.

Abstract: A catalyst composition comprising palladium, silver and a support material (preferably alumina) is contacted at a relatively low temperature (of up to about 60.degree. C.) with a liquid composition comprising an effective reducing agent (preferably an alkali metal borohydride, hydrazine, formaldehyde, formic acid, ascorbic acid, dextrose, aluminum powder). Preferably, at least one alkali metal compound (more preferably KOH, RbOH, CsOH, KF) is also present in the liquid composition. An improved process for selectively hydrogenating acetylene (to ethylene) employs this wet-reduced catalyst composition.

Abstract: A foam control agent which is free from hydrocarbon oils and comprises (A) an organopolysiloxane with 0 to 60% of units (i) ##EQU1## wherein R denotes a C.sub.8 hydrocarbon group and a is 0-3, and 40 to 100% of units (ii) ##EQU2## wherein R" is --Z.sub.z --R' with R' being an C.sub.9-35 alkyl, Z is a linking group and z is 0 or 1, b 0, 1 or 2, c 1 or 2 and b+c 1, 2 or 3, provided more than 70% by weight of the carbon content of (A) is due to R", (B) a finely divided hydrophobic particulate material and (C) optionally a MQ organosilicon resin. The agents give improved performance and stability e.g. in detergent powders.